Merge branch 'maint' into java-work * maint: test defs: new function 'fatal_', for hard errors maintcheck: fix some failures, extend some checks automake, aclocal: honour configure-time AUTOCONF and AUTOM4TE build: the user can override AUTOM4TE, AUTORECONF and AUTOUPDATE too remake: behave better with non-GNU make in subdirectories tests/README: fix example about `make -e' usage